Natural Block in Machu Picchu Mountain (IMAGE) Geological Society of America Caption Natural block in Machu Picchu Mountain. The local network of faults and fractures is visible in the blocks of rock integrated into Machu Picchu's structures. Photo taken 6 Nov 2010. Credit Rualdo Menegat Usage Restrictions Credit: Rualdo Menegat. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.